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Glossary
GL-13
Cisco 10008 Router Hardware Installation Guide
OL-0659-13
TDM
Time-division multiplexing. A technique in which information from multiple channels can be allocated
bandwidth on a single wire based on preassigned time slots. Bandwidth is allocated to each channel
regardless of whether the station has data to transmit.
Telcordia
Organization that performs research and development on behalf of the Regional Bell Operating Companies
(RBOCs). Formerly called Bellcore.
TELNET
Standard terminal emulation protocol in the TCP/IP protocol stack. Telnet is used for remote terminal
connection, enabling users to log in to remote systems and use resources as if they were connected to a
local system. Telnet is defined in RFC 854.
Terminal Access
Controller Access
Control System Plus
See TACACS+.
TFTP
Trivial File Transfer Protocol. Simplified version of FTP that allows files to be transferred from one
computer to another over a network.
Time-division
multiplexing
See TDM.
Traffic management
A technique for avoiding congestion and shaping and policing traffic. It allows links to operate at high
levels of utilization by scaling back lower-priority, delay-tolerant traffic at the edge of the network
when congestion begins to occur.
Traffic shaping
Use of queues to limit surges that can congest a network. Data is buffered and then sent into the network
in regulated amounts to ensure that the traffic will fit within the promised traffic envelope for the
particular connection. Traffic shaping is used in ATM, Frame Relay, and other types of networks. Also
known as metering, shaping, or smoothing.